[jdk21u] RFR: 8313752: InstanceKlassFlags::print_on doesn't print the flag names

[Aleksey Shipilev]

On Wed, 23 Aug 2023 07:59:37 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to fix JDK 21 regression in diagnostic printing.
> 
> Additional testing:
>  - [x] New test passes with the fix, fails without it

Testing is clean. Push approval granted.

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PR Comment: https://git.openjdk.org/jdk21u/pull/87#issuecomment-1691055964